Apparatus for positioning apertures of a disk assembly

Details Apparatus for positioning apertures of a disk assembly Apparatus for positioning apertures of a disk assembly

1991-11-21

1993-03-30

Ben, Loha

Optical: systems and elements

Absorption filter

Movable in or out of optical path

359233, 250233, G02B 522

Patent

active

051989395

ABSTRACT:
Apparatus for positioning apertures in a beam of light including a plurality of drive members coaxially supported on a longitudinally extending shaft, each having a separate electrically operable drive motor mechanically interlocked therewith.

REFERENCES:
patent: 3333505 (1967-08-01), Unuma
patent: 3654480 (1972-04-01), Stephenson
patent: 3883243 (1975-05-01), Weisglass et al.

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